public VTSInfo[] Parse(byte[] pb, int offset, int length)
{
List <VTSInfo> result = new List <VTSInfo>();
_buffer.Append(Encoding.Default.GetString(pb, offset, length));
string[] msgs = parseMsg();
foreach (string msg in msgs)
{
VTSInfo info = parseInfo(msg);
if (info != null)
{
result.Add(info);
}
}
return(result.ToArray());
}
private VTSInfo parseInfo(string msg)
{
try
{
string[] strs = msg.Split(new char[] { ',' });
if (strs.Length > 38 && strs[0] != "TimeStamp")
{
VTSInfo info = new VTSInfo();
double minSeconds = 0;
double.TryParse(strs[0], out minSeconds);
info.DataTime = _baseTime.AddMilliseconds(minSeconds).ToLocalTime();
int.TryParse(strs[1], out info.SystemTrackId);
int.TryParse(strs[2], out info.Status);
byte[] pbName = Convert.FromBase64String(strs[3]);
info.Name = Encoding.Default.GetString(pbName);
info.ShortName = strs[4];
info.CallSign = strs[5];
int.TryParse(strs[6], out info.ShipType);
int.TryParse(strs[7], out info.Length);
int.TryParse(strs[8], out info.Width);
double lat = 0;
double.TryParse(strs[9], out lat);
info.Latitude = lat * 180 / Math.PI;
double lon = 0;
double.TryParse(strs[10], out lon);
info.Longitude = lon * 180 / Math.PI;
double course = 0;
double.TryParse(strs[11], out course);
info.Course = course * 180 / Math.PI;
if (course < 0)
{
info.Course += 360;
}
double speed = 0;
double.TryParse(strs[12], out speed);
info.Speed = speed * 3600 / 1852;
double heading = 0;
double.TryParse(strs[13], out heading);
info.Heading = heading * 180 / Math.PI;
double timeLastUpdate = 0;
double.TryParse(strs[14], out timeLastUpdate);
info.TimeLastUpdate = _baseTime.AddSeconds(timeLastUpdate).ToLocalTime();
int.TryParse(strs[15], out info.ObjType);
int.TryParse(strs[16], out info.TargetType);
int.TryParse(strs[17], out info.PilotStatus);
int.TryParse(strs[18], out info.Rating);
int.TryParse(strs[19], out info.LabelColorIndex);
int.TryParse(strs[20], out info.Category);
info.TransponderId = strs[21];
int.TryParse(strs[22], out info.TransponderState);
int.TryParse(strs[23], out info.DBTrackId);
double.TryParse(strs[24], out info.Draught);
byte[] pbInfoTxt = Convert.FromBase64String(strs[25]);
info.InfoTxt = Encoding.Default.GetString(pbInfoTxt);
double.TryParse(strs[26], out info.ETA);
double.TryParse(strs[27], out info.ETAEndPoint);
int rot = 0;
int.TryParse(strs[28], out rot);
info.RateOfTurn = (rot / 4.733) * (rot / 4.733);
int.TryParse(strs[29], out info.AISNavStatus);
int.TryParse(strs[30], out info.AISRateOfTurn);
int.TryParse(strs[31], out info.AISSOG);
int.TryParse(strs[32], out info.AISLatitude);
int.TryParse(strs[33], out info.AISLongitude);
int.TryParse(strs[34], out info.AISCOG);
int.TryParse(strs[35], out info.AISTrueHeading);
int.TryParse(strs[36], out info.AISETA);
double.TryParse(strs[37], out info.AISDraught);
double.TryParse(strs[38], out info.AISTimeOfLastUpdate);
info.RecvTime = DateTime.Now;
return(info);
}
return(null);
}
catch (Exception)
{
//TestTool.Common.LogService.Log.Error(err.ToString());//发现接收数据格式不正确，Convert.FromBase64String()时出错
return(null);
}
}